1.ld:
library not found for -luchardet-ios
删除other linker flags 中的-luchardet-ios
2.Undefined symbols for architecture arm64: "_res_9_ns_initparse", referenced from: mailcore::MXRecordResolverOperation::main()
in libMailCore-ios.a(MCMXRecordResolverOperation.o) "_res_9_search", referenced from: mailcore::MXRecordResolverOperation::main() in libMailCore-ios.a(MCMXRecordResolverOperation.o) "_res_9_ns_parserr", referenced from: mailcore::MXRecordResolverOperation::main()
in libMailCore-ios.a(MCMXRecordResolverOperation.o) "_res_9_ns_sprintrr", referenced from: mailcore::MXRecordResolverOperation::main() in libMailCore-ios.a(MCMXRecordResolverOperation.o) "_res_9_dn_expand", referenced from: mailcore::MXRecordResolverOperation::main()
in libMailCore-ios.a(MCMXRecordResolverOperation.o) ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation)
在other linker flags 中添加-lresolv
关于IOS mailcore2 github最新版编译失败问题小计
原文：http://blog.csdn.net/yangzhen19900701/article/details/44674463
